car, these hills became accessible. he watched horses be dragged to death. cable cars were invent in san francisco to solve the problem with it's unique, vertically challenged terrain. we are still using cars a century old >> the old cable car is the most unique thing, it's still going. it was a good design by then and is still now. if we don't do something now. it's going to be worse later. >> the cable cars are built the same as they were in the late 1800's. we use a modern machinery. we haven't changed a thing. it's just how we get there. >> it's a time consuming job.